/Engine/Source/Runtime/Foliage/Public/GrassInstancedStaticMeshComponent.h
void AcceptPrebuiltTree ( [TArray](API\Runtime\Core\Containers\TArray)< [FInstancedStaticMeshInstanceData](API\Runtime\Engine\Components\FInstancedStaticMeshInstanceData) > & InInstanceData, [TArray](API\Runtime\Core\Containers\TArray)< [FClusterNode](API\Runtime\Engine\Components\FClusterNode) > & InClusterTree, int32 InOcclusionLayerNumNodes, int32 InNumBuiltRenderInstances )